Sun Microsystems SPARCstation 20, Service Manual

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216 SPARCstation 20 Service Manual • July 1996
Audio Ports
The audio ports include: headphone connector, microphone connector, audio line-in
connector, and audio line-out connector.
TABLE C-8
lists the pin assignments and
signal descriptions for the audio ports.
FIGURE C-8
Back Panel Audio Ports and Icons
5
Comp Sync
O GND Composite sync
6
Hort Sync
O TTL Horizontal sync
7
Serial Write
O TTL Serial write
8
Sense <1>
I TTL Sense
9
Sense <2>
I TTL Sense
10
Ground
None GND Ground
TABLE C-8
Audio Port Signals
Headphone Microphone (old) Microphone (new) Line-Out Line-In
Tip Left Channel Mono In Left Channel Left Channel Left Channel
Ring
(Center) Right Channel Microphone power Right Channel Right Channel Right Channel
Shield Return Ground Return Return Return
TABLE C-7
13W3 Connector Pin Assignments
Pin Function I/O Level Signal Description